Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Thu, Feb 23, 2017 at 06:45:50PM +0530, Bhupinder Thakur wrote: > Hi, > > Currently, xenconsoled supports only PV console. To support one > additional pl011 console, some of the data structures in struct domain > and certain functions such as buffer_append, ring_free_bytes, etc. > will have to

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, Currently, xenconsoled supports only PV console. To support one additional pl011 console, some of the data structures in struct domain and certain functions such as buffer_append, ring_free_bytes, etc. will have to be be scaled to support now two types of consoles. Some changes are required

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Wed, 15 Feb 2017, Bhupinder Thakur wrote: > On 15 February 2017 at 13:45, Bhupinder Thakur > wrote: > > Hi Stefano, > > > > On 14 February 2017 at 03:14, Stefano Stabellini > > wrote: > >> On Mon, 13 Feb 2017, Bhupinder Thakur wrote: > >>>

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, On 15 February 2017 at 13:45, Bhupinder Thakur wrote: > Hi Stefano, > > On 14 February 2017 at 03:14, Stefano Stabellini > wrote: >> On Mon, 13 Feb 2017, Bhupinder Thakur wrote: >>> Hi Stefano, >>> >>> On 9 February 2017 at 05:40,

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On 14 February 2017 at 03:14, Stefano Stabellini wrote: > On Mon, 13 Feb 2017, Bhupinder Thakur wrote: >> Hi Stefano, >> >> On 9 February 2017 at 05:40, Stefano Stabellini >> wrote: >> > On Wed, 8 Feb 2017, Bhupinder Thakur wrote: >>

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Mon, 13 Feb 2017, Bhupinder Thakur wrote: > Hi Stefano, > > On 9 February 2017 at 05:40, Stefano Stabellini > wrote: > > On Wed, 8 Feb 2017, Bhupinder Thakur wrote: > >> Hi Julien, > >> > >> On 3 February 2017 at 19:38, Julien Grall wrote: > >>

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On 9 February 2017 at 05:40, Stefano Stabellini wrote: > On Wed, 8 Feb 2017, Bhupinder Thakur wrote: >> Hi Julien, >> >> On 3 February 2017 at 19:38, Julien Grall wrote: >> > So if I understand correctly, you don't receive anymore

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Wed, 8 Feb 2017, Bhupinder Thakur wrote: > Hi Julien, > > On 3 February 2017 at 19:38, Julien Grall wrote: > > So if I understand correctly, you don't receive anymore output. Correct? > > Have you tried to see whether the pl011 driver is receiving interrupt or > > even

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Julien, On 3 February 2017 at 19:38, Julien Grall wrote: > So if I understand correctly, you don't receive anymore output. Correct? > Have you tried to see whether the pl011 driver is receiving interrupt or > even Linux calling it. The pl011 driver is not receiving the

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Fri, Feb 3, 2017 at 2:53 PM, Bhupinder Thakur wrote: > Hi, > >>> Hi, >>> >>> I have done the changes for emulating pl011 in Xen. Currently, I have >>> verified the emulation code by manually reading/writing data to >>> /dev/ttyAMA0 which is the device file for

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On 03/02/17 13:53, Bhupinder Thakur wrote: Hi, Hi Bhupinder, Hi, I have done the changes for emulating pl011 in Xen. Currently, I have verified the emulation code by manually reading/writing data to /dev/ttyAMA0 which is the device file for pl011 device. The data is flowing fine between

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, >> Hi, >> >> I have done the changes for emulating pl011 in Xen. Currently, I have >> verified the emulation code by manually reading/writing data to >> /dev/ttyAMA0 which is the device file for pl011 device. The data is >> flowing fine between xenconsoled and the guest domain. >> >> As a

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Fri, Jan 27, 2017 at 05:44:15PM +0530, Bhupinder Thakur wrote: > Hi, > > I have done the changes for emulating pl011 in Xen. Currently, I have > verified the emulation code by manually reading/writing data to > /dev/ttyAMA0 which is the device file for pl011 device. The data is > flowing fine

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Fri, 27 Jan 2017, Bhupinder Thakur wrote: > Hi, > > I have done the changes for emulating pl011 in Xen. Currently, I have > verified the emulation code by manually reading/writing data to > /dev/ttyAMA0 which is the device file for pl011 device. The data is > flowing fine between xenconsoled

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, I have done the changes for emulating pl011 in Xen. Currently, I have verified the emulation code by manually reading/writing data to /dev/ttyAMA0 which is the device file for pl011 device. The data is flowing fine between xenconsoled and the guest domain. As a next step, I wanted to use

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Tue, 17 Jan 2017, Julien Grall wrote: > Hi, > > Sorry for the late answer, I am just back from holidays and still catching-up > with my e-mails. > > On 03/01/17 20:08, Stefano Stabellini wrote: > > On Thu, 29 Dec 2016, Bhupinder Thakur wrote: > > > On 28 December 2016 at 23:19, Julien Grall

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, On 06/01/17 21:54, Stefano Stabellini wrote: On Fri, 6 Jan 2017, Bhupinder Thakur wrote: Hi, I am trying to allocate a new SPI VIRQ for sending pl011 interrupt to the guest OS. Currently Xen does not allow to allocate a SPI VIRQ for a guest domain. I tried allocating a new SPI VIRQ by

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, Sorry for the late answer, I am just back from holidays and still catching-up with my e-mails. On 03/01/17 20:08, Stefano Stabellini wrote: On Thu, 29 Dec 2016, Bhupinder Thakur wrote: On 28 December 2016 at 23:19, Julien Grall wrote: On 21/12/16 22:12, Stefano

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Tue, 10 Jan 2017, Bhupinder Thakur wrote: > Hi Stefano, > > > > On 7 January 2017 at 03:24, Stefano Stabellini wrote: > > Hello Bhupinder, > > > > it is good to hear that you are making progress. > > > > > > On Fri, 6 Jan 2017, Bhupinder Thakur wrote: > >> Hi, > >> >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On 7 January 2017 at 03:24, Stefano Stabellini wrote: > Hello Bhupinder, > > it is good to hear that you are making progress. > > > On Fri, 6 Jan 2017, Bhupinder Thakur wrote: >> Hi, >> >> I am trying to allocate a new SPI VIRQ for sending pl011 interrupt to

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hello Bhupinder, it is good to hear that you are making progress. On Fri, 6 Jan 2017, Bhupinder Thakur wrote: > Hi, > > I am trying to allocate a new SPI VIRQ for sending pl011 interrupt to > the guest OS. Currently Xen does not allow to allocate a SPI VIRQ for > a guest domain. I tried

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, I am trying to allocate a new SPI VIRQ for sending pl011 interrupt to the guest OS. Currently Xen does not allow to allocate a SPI VIRQ for a guest domain. I tried allocating a new SPI VIRQ by calling vgic_allocate_spi() but it failed as the SPI VIRQ range for the guests is limited to 0

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Thu, 29 Dec 2016, Bhupinder Thakur wrote: > On 28 December 2016 at 23:19, Julien Grall wrote: > > On 21/12/16 22:12, Stefano Stabellini wrote: > >> > >> On Wed, 21 Dec 2016, Julien Grall wrote: > >>> > >>> On 20/12/2016 20:53, Stefano Stabellini wrote: > > On

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Wed, 28 Dec 2016, Julien Grall wrote: > Hi Stefano, > > On 21/12/16 22:12, Stefano Stabellini wrote: > > On Wed, 21 Dec 2016, Julien Grall wrote: > > > On 20/12/2016 20:53, Stefano Stabellini wrote: > > > > On Tue, 20 Dec 2016, Julien Grall wrote: > > > > > On 19/12/2016 21:24, Stefano

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On 28 December 2016 at 23:19, Julien Grall wrote: > On 21/12/16 22:12, Stefano Stabellini wrote: >> >> On Wed, 21 Dec 2016, Julien Grall wrote: >>> >>> On 20/12/2016 20:53, Stefano Stabellini wrote: On Tue, 20 Dec 2016, Julien Grall wrote: > > On 19/12/2016

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On 28/12/16 17:49, Julien Grall wrote: On 21/12/16 22:12, Stefano Stabellini wrote: On Wed, 21 Dec 2016, Julien Grall wrote: On 20/12/2016 20:53, Stefano Stabellini wrote: On Tue, 20 Dec 2016, Julien Grall wrote: On 19/12/2016 21:24, Stefano Stabellini wrote: On Mon, 19 Dec 2016,

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On 21/12/16 22:12, Stefano Stabellini wrote: On Wed, 21 Dec 2016, Julien Grall wrote: On 20/12/2016 20:53, Stefano Stabellini wrote: On Tue, 20 Dec 2016, Julien Grall wrote: On 19/12/2016 21:24, Stefano Stabellini wrote: On Mon, 19 Dec 2016, Christoffer Dall wrote: On Fri, Dec

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Wed, 21 Dec 2016, Julien Grall wrote: > Hi Stefano, > > On 20/12/2016 20:53, Stefano Stabellini wrote: > > On Tue, 20 Dec 2016, Julien Grall wrote: > > > On 19/12/2016 21:24, Stefano Stabellini wrote: > > > > On Mon, 19 Dec 2016, Christoffer Dall wrote: > > > > > On Fri, Dec 16, 2016 at

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On 20/12/2016 22:33, Stefano Stabellini wrote: On Tue, 20 Dec 2016, Christoffer Dall wrote: On Mon, Dec 19, 2016 at 12:24:18PM -0800, Stefano Stabellini wrote: On Mon, 19 Dec 2016, Christoffer Dall wrote: On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: hvm_param is

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On 20/12/2016 20:53, Stefano Stabellini wrote: On Tue, 20 Dec 2016, Julien Grall wrote: On 19/12/2016 21:24, Stefano Stabellini wrote: On Mon, 19 Dec 2016, Christoffer Dall wrote: On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: Finally, we cannot hijack one of the

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Tue, Dec 20, 2016 at 01:33:39PM -0800, Stefano Stabellini wrote: > On Tue, 20 Dec 2016, Christoffer Dall wrote: > > Hi Stefano, > > > > On Mon, Dec 19, 2016 at 12:24:18PM -0800, Stefano Stabellini wrote: > > > On Mon, 19 Dec 2016, Christoffer Dall wrote: > > > > On Fri, Dec 16, 2016 at

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Tue, 20 Dec 2016, Bhupinder Thakur wrote: > Hi Stefano, > > Thanks for a detailed explanation. I have some queries. > > > Let me explain how the PV console protocol and drivers work, because > > they are a bit unusual. The first PV console is advertised via > > hvm_params. The guest calls: >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Tue, 20 Dec 2016, Christoffer Dall wrote: > Hi Stefano, > > On Mon, Dec 19, 2016 at 12:24:18PM -0800, Stefano Stabellini wrote: > > On Mon, 19 Dec 2016, Christoffer Dall wrote: > > > On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: > > > > (CC rest maintainers for event channel

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Tue, 20 Dec 2016, Stefano Stabellini wrote: > On Tue, 20 Dec 2016, Julien Grall wrote: > > Hi Stefano, > > > > On 19/12/2016 21:24, Stefano Stabellini wrote: > > > On Mon, 19 Dec 2016, Christoffer Dall wrote: > > > > On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: > > > > > (CC

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Tue, 20 Dec 2016, Julien Grall wrote: > Hi Stefano, > > On 19/12/2016 21:24, Stefano Stabellini wrote: > > On Mon, 19 Dec 2016, Christoffer Dall wrote: > > > On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: > > > > (CC rest maintainers for event channel questions) > > > > > > > >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On Mon, Dec 19, 2016 at 12:24:18PM -0800, Stefano Stabellini wrote: > On Mon, 19 Dec 2016, Christoffer Dall wrote: > > On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: > > > (CC rest maintainers for event channel questions) > > > > > > On 16/12/16 10:06, Bhupinder Thakur

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, On 19/12/2016 21:24, Stefano Stabellini wrote: On Mon, 19 Dec 2016, Christoffer Dall wrote: On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: (CC rest maintainers for event channel questions) On 16/12/16 10:06, Bhupinder Thakur wrote: Hi, Hi Bhupinder, The idea

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Stefano, Thanks for a detailed explanation. I have some queries. > > Let me explain how the PV console protocol and drivers work, because > they are a bit unusual. The first PV console is advertised via > hvm_params. The guest calls: > > hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, ); >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Mon, 19 Dec 2016, Christoffer Dall wrote: > On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: > > (CC rest maintainers for event channel questions) > > > > On 16/12/16 10:06, Bhupinder Thakur wrote: > > >Hi, > > > > Hi Bhupinder, > > > > >The idea is for Xen to act as an

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Fri, Dec 16, 2016 at 05:03:13PM +, Julien Grall wrote: > (CC rest maintainers for event channel questions) > > On 16/12/16 10:06, Bhupinder Thakur wrote: > >Hi, > > Hi Bhupinder, > > >The idea is for Xen to act as an intermediary as shown below: > > > > ring buffers > >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

(CC rest maintainers for event channel questions) On 16/12/16 10:06, Bhupinder Thakur wrote: Hi, Hi Bhupinder, The idea is for Xen to act as an intermediary as shown below: ring buffers rx/tx fifo dom0 <---> Xen HYP (running pl011

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi, The idea is for Xen to act as an intermediary as shown below: ring buffers rx/tx fifo dom0 <---> Xen HYP (running pl011 emulation) <---> domU event interrupts Xen will

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Thu, 1 Dec 2016, Christoffer Dall wrote: > On Wed, Nov 30, 2016 at 02:26:50PM -0800, Stefano Stabellini wrote: > > On Wed, 30 Nov 2016, Julien Grall wrote: > > > Hi all, > > > > > > Few months ago, Linaro has published the version 2 of the VM specification > > > [1]. > > > > > > For those who

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hi Christoffer, On 30/11/16 16:24, Christoffer Dall wrote: On Wed, Nov 30, 2016 at 03:29:32PM +, Julien Grall wrote: Hi all, Few months ago, Linaro has published the version 2 of the VM specification [1]. For those who don't know, the specification provides guidelines to guarantee a

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Wed, Nov 30, 2016 at 02:26:50PM -0800, Stefano Stabellini wrote: > On Wed, 30 Nov 2016, Julien Grall wrote: > > Hi all, > > > > Few months ago, Linaro has published the version 2 of the VM specification > > [1]. > > > > For those who don't know, the specification provides guidelines to > >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Wed, 30 Nov 2016, Julien Grall wrote: > Hi all, > > Few months ago, Linaro has published the version 2 of the VM specification > [1]. > > For those who don't know, the specification provides guidelines to guarantee a > compliant OS images could run on various hypervisor (e.g Xen, KVM). > >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

Hello Julien, On 30 November 2016 at 17:29, Julien Grall wrote: [...] > I think we can distinct two places where the PL011 could be emulated: > in the hypervisor, or outside the hypervisor. > > Emulating the UART in the hypervisor means that we take the risk to increase >

Re: [Xen-devel] Xen ARM - Exposing a PL011 to the guest

On Wed, Nov 30, 2016 at 03:29:32PM +, Julien Grall wrote: > Hi all, > > Few months ago, Linaro has published the version 2 of the VM > specification [1]. > > For those who don't know, the specification provides guidelines to > guarantee a compliant OS images could run on various hypervisor